The Electrical System
Which part of the system carries electricity to homes and buildings?
The electrical grid (wires)
Which solution costs nothing but saves a little energy?
Encourage LED lightbulbs.
Which solution is good for saving energy but makes people hotter in the summer?
Limiting the use of air conditioners.
What does “reliable” mean when choosing a solution?
It works most of the time.
Road work ahead? ____________
Yeah, I sure hope it does
What are the four main parts of the electrical system?
Energy source, source converter, electrical grid (wires), and electrical converter (device)
Which solution is cheap but pollutes the air and is nonrenewable?
Build another fossil fuel power plant.
Which solution could make people’s electric bills lower but costs more to replace?
LED lightbulbs
Which criterion focuses on whether a solution harms animals or pollutes?
Safe for the environment.
If the lamp itself is broken, which part of the system failed?
The electrical converter (device)
Which solution protects wires from storms but is expensive and harder to repair if broken?
Move the grid underground.
Which solution works well during sunny days but is unreliable at night or when cloudy?
Solar panels.
Which criterion would be most affected if a solution created noise pollution from machines?
Won’t bother the people of Ergstown.
Get to Del Taco. They have a new thing called _______
Fre sha voca do
What is the job of a source converter in an electrical system?
To change the source’s energy into electrical energy.
Which solution could harm fish and doesn’t work well during droughts?
Build a hydroelectric power plant.
Which solution is renewable, does not cause air pollution, but is unreliable and dangerous to flying animals?
Wind turbines.
Which solution would meet the criterion of being “cheap” but not the criterion of being “safe for the environment”?
Build a fossil fuel plant.
If the energy source is working and the wires are not damaged, but the lamp still will not turn on, which part(s) of the system must have failed?
The source converter or the device itself
Which solution saves the most energy overall, but causes electric clocks without batteries to reset every day?
Shutting down the system from 2–3 a.m.
Which solution can keep electricity flowing if one wire breaks, but still fails if a storm damages both wires?
Adding backup wires.
Which criterion is met by LED lightbulbs because they lower electricity bills?
Saves energy (or energy efficient).
What did you do? ____________
Why did you do that? ________